Imaging of individual formate ions adsorbed on TiO2(110) surface by non-contact atomic force microscopy

被引:83
作者
Fukui, K [1 ]
Onishi, H [1 ]
Iwasawa, Y [1 ]
机构
[1] Univ Tokyo, Grad Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 113, Japan
关键词
D O I
10.1016/S0009-2614(97)01143-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have succeeded in imaging individual formate ions adsorbed on TiO2(110)-(1 X 1) by non-contact atomic force microscopy. Formic acid is dissociatively adsorbed on TiO2(110)-(1 X 1) surface at room temperature to give formate ions (HCOO-) which order in a (2 X 1) periodicity at the saturation coverage of 0.5 ML. Thr (2 X 1)-formate overlayer was resolved as ordered bright spots with a rectangular unit of 0.65 X 0.59 nm(2). Dispersed formate ions of lower coverages were also observed as bright spots between the bridging oxygen ridges along the [001] direction. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:296 / 301
页数:6
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